Current Issues:
1. The part where the backmost hair meets the static upper part does not match by 1 pixel, cannot be noticed until you squint or zoom in
2. The bottom of the hair has another layer preceding, this was intended to match the reference.
3. The front piece of hair and the back part ( Dynamic layers) are not perfectly clipped, the only way you will notice is if SD-chan is upright and diagonally back, which takes a lot of mouse maneuvering , and even then it's not very noticeable